On Thu, May 15, 2014 at 03:25:43PM -0400, Don Zickus wrote: > I started this patch by fixing a performance problem with the GHES > NMI handler and then things evolved to more patches as I was poking > around in the code. > > The main focus was moving the GHES NMI driver to its own NMI subtype > to avoid slowing down perf handling. Then I decided to move the > default external NMI handler to its own routine. Then finally, I > needed to see which NMI handlers were registered so I hacked up > /proc/interrupts to show me. > > Tested mostly on HP boxes that have GHES enabled and having the iLO > send NMIs to panic the box (using hpwdt driver). Ran perf on other > GHES enabled boxes to test performance results. > > V2: adding irq_work items to handled possible lost NMIs (new patch 1) > modified output of /proc/interrupts based on feedback (patch 6) >
ugh. Forgot to snip below.. > Don Zickus (5): > x86, nmi: Add new nmi type 'external' > x86, nmi: Add boot line option 'panic_on_unrecovered_nmi' and > 'panic_on_io_nmi' > x86, nmi: Remove 'reason' value from unknown nmi output > x86, nmi: Move default external NMI handler to its own routine > x86, nmi: Add better NMI stats to /proc/interrupts and show handlers > > Documentation/kernel-parameters.txt | 9 ++ > arch/x86/include/asm/nmi.h | 5 + > arch/x86/kernel/irq.c | 3 + > arch/x86/kernel/nmi.c | 199 ++++++++++++++++++++++++++-------- > drivers/acpi/apei/ghes.c | 4 +- > drivers/watchdog/hpwdt.c | 24 +++-- > 6 files changed, 187 insertions(+), 57 deletions(-) > > *** BLURB HERE *** .. to here. Cheers, Don > > Don Zickus (6): > x86, nmi: Implement delayed irq_work mechanism to handle lost NMIs > x86, nmi: Add new nmi type 'external' > x86, nmi: Add boot line option 'panic_on_unrecovered_nmi' and > 'panic_on_io_nmi' > x86, nmi: Remove 'reason' value from unknown nmi output > x86, nmi: Move default external NMI handler to its own routine > x86, nmi: Add better NMI stats to /proc/interrupts and show handlers > > Documentation/kernel-parameters.txt | 9 + > arch/x86/include/asm/nmi.h | 5 + > arch/x86/kernel/irq.c | 3 + > arch/x86/kernel/nmi.c | 302 +++++++++++++++++++++++++++++----- > drivers/acpi/apei/ghes.c | 4 +- > drivers/watchdog/hpwdt.c | 24 ++- > 6 files changed, 292 insertions(+), 55 deletions(-) > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
